The next generation of premium diesel fuels 

Cenex® Ruby Fieldmaster® premium diesel fuel is precisely formulated to deliver superior engine performance and fuel efficiency while preventing costly equipment downtime, even in the harshest field environments.

An industry-leading premium diesel additive package enhanced with:

• Advanced, aggressive detergency that effectively removes engine deposits and keeps injectors clean, extending engine lifespan
• A state-of-the-art two-phase total water management system that optimizes combustion and boosts engine function
• Exceptional filterability that protects equipment from harmful contaminants, minimizing equipment damage and operational disruptions
• A complete fuel burn that minimizes waste and improves overall fuel efficiency, delivering more hours per gallon